Question 1002171
Hi there,
a2=ae^−6.345t
Make A2 = 1
A = 1
a2=ae^−6.345t
1 = 2e^-6.345t
1/2 = e^-6345t
0.5 = e^-6.345t
ln0.5 = -6.345t lne  (lne = 1)
ln0.5 = -6.345t
t = ln0.5/-6.345
t = 0.109 of a day.
Hope this helps :-)